"As a married person myself, I don't know what it's like to be told I can't marry somebody I love, and want to marry," the "Jesus, Take the Wheel" singer – and devout Christian – told Britain's The Independent newspaper.

"I can't imagine how that must feel," she said. "I definitely think we should all have the right to love, and love publicly, the people that we want to love."

Underwood says it's actually her faith that's led her to support gay marriage.

"Above all, God wanted us to love others," the recent CMT award winner said. "It's not about setting rules, or [saying] 'everyone has to be like me.' "